Syllabic typewriting machine



D. L. SHELTON SYLLABIC TYPEWRITING MACHINES March 27, 1962 4Sheets-Sheet 1 Filed Aug. 15, 1957 NVENTOR March 27, 1962 D. L. SHELTON3,026, 8

SYLLABIC TYPEWRITING MACHINES Filed Aug. 15, 1957 4 Sheets-Sheet 2INVENTOR March 27, 1962 D. L. SHELTON SYLLABIC TYPEWRITING MACHINESFiled Aug. 15, 1957 4' Sheets-Sheet 3 INVENTOR March 1962 D. L. SHELTON3,026,984

SYLLABIC TYPEWRITING MACHINES Filed Aug. 15, 1957 4 Sheets-Sheet 4INVENTOR United States Patent 3 026984 SYLLABIC TYPEWRITING MACHINESDothan L. Shelton, 4420 W. 2nd St., Amarillo, Tex. Filed Aug. 15, 1957,Ser. No. 678,344 33 Claims. (Cl. 19717) This invention relates totypewriting machines and more particularly to that class of typewritingmachines wherein the type bars and other operable devices are powerdriven. It is the object of this invention to provide a power operatedtypewriter adapted to use a syllabic keyboard of the type commonly usedon shorthand machines, so designed that in response to finger movementsit will be possible to produce a typewritten page in clear writing, asdistinguished from code writing as usually produced by shorthandmachines, at a speed comparable to the spoken language. The obvious needand utility of such a machine is apparent when it is observed that oneusing such a machine can take dictation directly on the machine andproduce a finished typewritten transcript without the necessity ofrewriting what has been taken. Also in reporting, as in the court room acomplete transcript of the proceedings can be produced as the matter isreported without the necessity of long hours of transcribing. Such amachine used for ordinary typewriting will more than double the speed ofproduction of the typist over present machines.

The keyboard used on presently manufactured power driven typewritersfirst appeared on the Sholes and Glidden manual typewriter of 1873 andwas intended for use with the two index fingers. After these machineshad been on the market for some time, touch typewriting was developedand this keyboard came to be regarded as standard for all typewriters.The highest official speed attained on this keyboard for sustainedwriting is slightly under 150 words per minute. For practical purposes,however, speeds of from 50 to 60 words per minute are regarded as goodfor the average typist.

During the early part of the present century, so called shorthandtypewriters were developed using the syllabic or word-at-a-strokekeyboard. Machines using this style of keyboard are presently beingmanufactured and have proved very successful in verbatim reporting. Themost serious drawback to these machines is that they write in a code orsemi-code on a paper tape and are not page printing typewriters. Forthis reason matter written thereon must be transcribed in the samefashion as conventional shorthand. Machines of this kind have gainedconsiderable acceptance and speeds approaching 400 words per minute havebeen attained thereon. For practical purposes, however, speeds of from125 to 200 words per minute are most common for experienced operators.

Power operated page printing typewriters having center striking typebars have been developed capable of mechanical speeds in excess of 400words per minute, however, present manufacturers of these machinescontinue to equip them with the standard keyboard having a practicaloperating speed of from 50 to 60 words per minute. What is proposed inmy invention is to provide a power driven page printing typewriter witha syllabic keyboard on which it will be possible for the averageoperator to write at speeds of 125 to 200 words per minute with the sameeffort that presently produces 50 to 60 words per minute on the standardtypewriter.

Word writing page printing typewriters have been designed wherein wordsand syllables are set up on the keyboard, in some instances by theoperation or" a single key, and in other instances by the operation of aplurality of keys. Dilficulties have been experienced in the method ofoperation of these machines in that a word or syllable may be selectedon the keyboard and set up in the machine with a single fingeroperation, but printed one letter 3,025,934 Patented Mar. 27, 1962 at atime while the operator waits. Upon completion of the writing of thefirst selection, additional selections may be made. Obviously verylittle in the way of speed can be gained by such a start and stop methodof operation.

It is an object of this invention to provide a method of typewritingwherein the operator or typist can uninterruptedly finger the keyboardwithout the necessity of waiting for the machine to complete a keyboardselection or function previously set up, before making anotherselection. This has been accomplished by devising the method ofoperation as herein disclosed around the principle that words andsyllables are made up of letters which fall into three groups classifiedas initial consonants, final consonants, and vowels, which are regardedas medial. On the keyboard adapted for use with the machine and methodof writing herein disclosed, the initial consonants are arranged at theleft side and adapted to be operated by the fingers of the left hand,the final consonants are arranged on the right side and adapted to beoperated by the fingers of the right hand, and the vowels are mediallyarranged to be operated by the thumbs. Corresponding to this arrangementof the keyboard, the letter types on the printing elements are arrangedin the order in which the letters most frequently'appear in words andsyllables and so disposed that any selection of letters set up on thekeyboard will be printed in rapid succession from left to right uponrelease of the keys. While this selection is being printed, the operatormay set up another selection on the keyboard without waiting for themachine to clear the first selection, thus the operator mayuninterruptedly finger the keyboard while the machine is in operationwithout continual stops and starts.

These and other objects are accomplished through novel means embodying akeyboard comprising finger keys adapted to be operated either singly orin combinations for the purpose of registering in the machine singleletters or combinations of letters comprising entire syllables or words,a selector mechanism cooperating with the finger keys for the purpose ofselecting letters or combinations of letters to be written, a typeregistering means for receiving and storing selections of letters orcombinations of letters to be written, a type bar actuating means forwriting the letters or combinations of letters selected, a releasingmeans for imparting type selections to the type bar actuating means, asequence control means whereby selected type bars are caused to operatein a predetermined sequence, a series of arcuately arrayed type barsarranged adjacent to a platen, and power means With the foregoing andother objects in view which will appear as the description progresses,this invention consists of certain novel features of construction andcombinations of parts as hereinafter more fully described and pointedout in the specifications and claims, it being understood that changesmay be made in the construction and arrangement of parts withoutdeparting from the spirit and scope of the invention as herein disclosedand claimed.

EIH the drawings:

FIGURE 1 is a sectional side elevation of a typewriting machineembodying this invention, showing internal construction and relationshipof parts.

FIGURE 2 is a sectional side elevation of the selector mechanism andtype bar actuating cams, disclosing the selector mechanism in actuatedposition.

FIGURE 3 is a sectional side elevation disclosing the type registeringmeans and the register actuating cam in operated position.

FIGURE 4 is a sectional side elevation of the type bar actuating cam andrelated parts in actuated position.

FIGURE 5 is an enlarged view of the reverse side of the actuating cam.

FIGURE 6 is an enlarged view of the actuating cam with portions cut awayto show operation of the releasing mechanism.

FIGURE 7 is an enlarged view of the actuating cams mounted in serieswith portions cut away to disclose internal construction.

FIGURE 8 is a front elevational view of a number of finger keys andrelated selector bars.

FIGURE 9 is a perspective view showing the construction of the selectorbars.

FIGURE 10 is a side elevational view of the actuating cam and relatedparts showing an alternate construction.

Referring more particularly to the drawings, there is disclosed amachine frame 21 and a platen 22 which is supported on a carriage ofconventional design. The carriage mechanism, as well as the variousother instrumentalities of the machine, such as the letter shift,tabulating mechanism, carriage drive and return mechanism, line feed,ribbon spools and oscillator, motor circuit and switch, the drivingmotor and all other essential parts not herein disclosed which arecommon to typewriting machines may be of any conventional or desiredconstruction.

Mounted in the lower front portion of the frame 21 is the key leverassembly comprised of a supporting shaft 23 upon which are pivotallymounted between spacers a plurality of key levers 24, which extendforwardly and are provided on their forward ends with finger keys 25,The finger keys are arranged to form a keyboard of the kind commonlyused on shorthand machines and is well known to the art. For this reasonand for the sake of brevity, a full keyboard is not shown, but only afew of the finger keys and corresponding key levers with related parts,areshown, the principles disclosed being readily adaptable to afull'keyboard.

Above the key levers24 and intermediate the supporting shaft 2 3 and-thefinger keys 25 is mountedthe type selecting means comprising a pluralityof permutably shiftable bars, specifically designated herein as primaryselector bars 26 and auxiliary selector bars 26A, disposed one above theother, extending crosswise of the machine frame, and slidably mounted ateach end in guides 27 as shown in FIGURE 8. The selector bars varyslightly in design and are provided on their edges with notches 28 andprojections29' (FIGURE 9), which are adapted to perform the typeselecting function as hereinafter explained. Each of the auxiliaryselector bars 26A is provided with a cross bar 30.integral therewith,which is adapted to contact a plurality of projections 29 provided onthe primary selector bars 26. To each of the auxiliary selector bars 26Ais attachedone end of a spring 31, the other end of which is secured tothe frame bracket 27. The springs 31 are adapted to constantly exertpressure on the auxiliary selector bars 26A so as to urge them to moveinto actuated position, but beingrestrained from so doing while theprimary selector bars 26 are in rest or inactive position, by therestraining action of the projections 29 provided on the primaryselector bars 26, which act against the cross bars carried on theauxiliary selector bars 26A.

Adjacent to the selector bars 26 and 26A and comprising a part of thetype selecting means are mounted a plurality of release hook carrierarms 32. These carrier arms are mounted at their upper and lower ends bymeans of pivoted links 33, which are mounted in spaced relation inslotted cross bars 34 by means of bearing shafts 35 and are of equallength so as to impart a parallel action to the carrier arms 32. Therelease hook carrier arms 32 are disposed vertically so as to cross theselector bars 26 and 26A at right angles and in such manner as tocontact the edges of the selector bars when released for selectionthereby. Adjacent to the lower end of each of the release hook carrierarms 32, extending rearwardly and forming a part thereof, is providedthe release hook carrier head 36 which is provided with a headed pin 37adapted to engage a release hook 99 by means of a slot as hereinaftermore fully explained.

The primary selector bars 26 are operatively connected to the key levers24 by means of pull bars 38, the upper ends of which are carried inguide 39, the lower ends being pivotally attached to corresponding keylevers 24. There is attached to each of the pull bars 38, intermediatethe ends thereof, one end of a spring 40, the other end of which isattached to a spring bracket 41 carried on the front part of the frame21. The springs 40 are disposed in such way as to constantly exerttension on the pull bars 38 and thus urge them and all operative partsconnected thereto into retracted or inactive position. Provided on therearward edge of each of the pull bars 38, intermediate the endsthereof, is a pin 42 which is adapted to engage a cam slot 43 providedon each of the primary selector bars 26 (FIGURE 8). The cam slots 43 areso designed that the downward motion of pins 42 will cause the primaryselector bars 26 to move in a transversev direction during initialmovement of the key levers.

Rearwardly of the key lever assembly is mounted the actuating mechanism,which consists of a transverse shaft 44 which is fixedly mounted in theframe brackets 45 (FIGURE 7), and upon which are mounted in spacedrelation a plurality of actuating cams 46, there being provided. one camfor each type bar and each operational device such as the letter shift,carriage return, tabulator mechanism, back spacer, and the like. At theextreme right end of the cam assembly and mounted in series with theactuating cams 46 is provided a control cam 47, and at the extreme leftend is provided a starter cam 48. The purpose and function of these camsare hereinafter more fully explained.

Each of the actuating cams 46 is provided with two release latches 49(FIGURES 5 and 6), which are pivotally mounted intermediate the endsthereof, one on each Side of the axis of the cam on brackets 50 by meansof pivots 51. On one end of the release latch 49 is provided a latchcontact head 52 and on the other end is provided a latch detent 53 whichis adapted to limit the clockwise movement of the release latch 49.Intermediate the contact head 52 and the pivot 51 of the release latch49 is provided thereon an ear 54 which is disposed to be acted upon by aball 55 carried in the adjacent actuating cam 46 as hereinafterexplained. Each of the release latches 49 is provided with a latchspring 56 which serves the function of urging the release latch 49 intorest position.

Each of the actuating cams 46 is provided with two movable elements orrelease balls 55 which are carried in ball races 57 recessed in the cam.The ball races 57 are choked at each end so as to retain the releaseballs 55 and to limit their movement within the races, yet a1- lowingsufficient lateral movement to perform the function of actuating therelease latches 49 as hereinafter more fully explained. The actuatingcams 46 are so spaced on the supporting shaft 44 (FIGURE 7) that therelease balls 55 carried in each of the actuating cams will contact thecorresponding release balls carried in the adjacent cams, so that theballs 55 form a continuous contact through the entire series ofactuating earns 46 when the cams are in primary or rest position. Therelease balls 55 are so disposed as to form two rows of contactingelements extending from end to end of the series of actuating cams 46.The rearward row of release balls 55 (FIGURE 1, the lower row in FIGURE7) is designated as being in active position, while the forward row isdesignated as being in neutral position. At each end of the rearward oractive row of release balls 55, and mounted in the frame brackets 45, isprovided release ball positioning means 69A and 66B. Each of the ballpositioning means is provided with a compression spring 53 which isdisposed to exert pressure on the ball 55 carried within the ball race57 providei in each of the ball positioning means. The tension of thesprings 58 may be adjusted as required to perform the ball positioningfunction by means of the adjusting screws 59. The ball positioning means60A and 69B are adapted to position the release balls 55 within theactuating cams 46 in transverse relation thereto as hereinafterexplained. The forward or neutral row of release balls 55 is providedwith a ball positioning means 60C carried in the frame bracket 45 anddisposed to retain the neutral balls 55 in rest position.

Carried on the face of each of the actuating cams 46 and concentrictherewith is a laterally projecting cam element 61 which is adapted tocontact the spring-tensioned actuating levers 63 for the purpose ofimparting operative action thereto. As an alternative embodiment, theactuating cam 46 (FIGURE is provided on its face with two laterallyprojecting contact rollers 62 which are concentric with the cam 46 andadapted to contact the actuating lever 63A and impart operative actionthereto. The actuating levers 63 are provided with an adjustable contacthead 64 and are mounted in spaced relation in slotted cross frame 65 bymeans of the bearing shaft 66. There is attached to an upwardlyextending portion of the actuating lever 63 one end of a spring 67, theother end of which is secured to the frame bracket 68 provided on thecross frame 65. The spring 67 is adapted to exert tension on theactuating lever 63 so as to urge the said actuating lever into contactwith the cam element 61 carried on the face of the actuating cam 46, tothereby exert force tending to rotate the actuating cam 46 intooperative engagement with the power roller 69.

It will be observed by reference to the drawings that the actuating camsare adapted to effect an operative function with each half revolutionthereof. It is found, however, that such operative functions as shiftingthe type basket, back spacing, and other similar functions require morepower and slower operation than the function of throwing the type bars.To effect theproper operation of these slower functions, a one-round camsuch as the starter cam 48 (FIGURE 3) may be provided for each of thesefunctions. This cam is provided on the face thereof with a single lobecam element 61A which is adapted to make operative contact with theactuating lever 63 for the purpose of imparting operative actionthereto, the actuating lever 63 being operatively connected with therespective parts operated thereby.

Adjacent to the actuating cams is mounted the power roller 69 which issupported by shaft 71 mounted in journals carried on the machine frame.When the machine is in operation, the power roller 69 is adapted to bein constant rotation in an anti-clockwise direction and to impartturning action to the actuating cams 46 when engaged thereby, by meansof peripheral contact with the enlarged segments 70 of the actuatingcams. When the cams 46 are rotated so that the spaces between thesegments 70 are disposed toward the power roller 69, the cams aredisengaged from the power roller and remain in primary or rest position.The power roller 69 is adapted to be activated by means of an electricmotor or other suitable power means, which for the sake of brevity isnot disclosed herein.

Intermediate the actuating cam assembly and the selector assembly isdisposed the register assembly and cam release means which is adapted toreceive type selections from the type selecting means and to impart thesame to the type bar actuating means. The register assembly is adaptedto receive type selections and when necessary retain them until the camassembly has completed an operational sequence and to then impart thetype selections to the cam release means for sequential operation ashereinafter more fully described. It should be understood that the termtype selection is used herein to include not only type bar functions,but also other the frame bracket 115.

6 operational functions associated with typewriting and the like, suchas the capital shift, letter spacing, line spacing, tabulating, backspacing, carriage return and other functions.

The cam release mechanism comprises a cam release pawl 72 which ismounted in the slotted cross bar 65 by means of a bearing shaft 66. Therelease pawl '72 is provided on its lower end with a detent 73 which isadapted to engage the release latch head 52 provided on the forwardrelease latch 49 for the purpose of arresting the movement of theactuating cam 46 and retaining it in primary position while at rest.There is provided on the release pawl 72 a spring 72A which is adaptedto urge the release pawl in an anti-clockwise direction and into thepath of the release latch head 52. There is provided on the cross frame65 a forwardly projecting detent 74 which is designed to limit theanti-clockwise turning action ofthe release pawl 72. The release pawl 72is provided with an upwardly extending arm 75 which connects with anoperating link 76, which extends forwardly and is attached to the upperend of a trip pawl 77. The

trip pawl 77 is mounted in the slotted cross frame 78 by means of abearing shaft 79, and extends downwardly to form a contact head 80. Thecam release mechanism also includes a secondary detent 114 which isafixed to The secondary detent 114 is adapted to engage the contact head52 of the rearward release latch 49 when the said actuating cam 46 hasbeen released from primary position and to thereby retain the actuatingcam in secondary position until released for operation as hereinafterexplained.

Beneath the cross frame 78, extending transversely of the machine andpivotally mounted to the side frame at each end at 81, is provided aregister bar 82 which is provided with spaced slots into which ismounted a series of register members or plungers 83, there being oneplunger for each type action or other device subject to delayed actioncontrol as hereinafter explained. Each register plunger 83 is providedwith a head 84, and a detent 85. The detent is adapted to cooperate witha leaf spring 86 for the purpose of retaining the register plunger 83either in actuated or retracted position. There is also provided on eachregister plunger 83 a contact lug 87 which is adapted to projectlaterally therefrom and to make operative engagement with thecorresponding trip pawl head 80. Adjacent to the register bar there isprovided a plunger reset bar 88, which is disposed to cooperate with theforward end of the register plungers 83 so as to return them toretracted position at the conclusion of each operation of the registerbar. At the left end of the register bar and integral therewith isprovided a bell crank 89 which is operatively connected to the startercam 48 (FIGURE 3) by means of the thrust link 90. The thrust link 90 ispivotally connected at its rearward end to the sublever 91 and at itsforward end to the register bar toggle link 92 which is pivotallymounted on its rearward end to the bell crank 89. The forward end of thelink 92 is pivotally connected to the forward toggle link 93 which ispivoted on the machine frame at 94. The toggle links 92. and 93 aredisposed when at rest to lock the register bar into rest position.

There is formed on the rearward side of the cross frame 78 a slottedguide into which is pivotally mounted the release hook support levers 95by means of a bearing shaft 96. Each support lever 95 is provided on itsupper end with a spring 97, the forward end of which is attached to theframe bracket 98. This spring serves to bias the support lever 95 andconnected parts into retracted position. On the lower end of the supportlever 95 is pivotally mounted the release hook 99 which is provided onits forward end with a slot 1% adapted to cooperate with the headed pin37 carried on the release hook carrier head 36, for the purpose ofsupporting the forward end of the release hook 99. There is provided onthe forward end of the release book 99, a hook-like notch I 101, whichis adapted to engage the release bail 106. The upwardly extending end ofthe release hook 99 terminates in a contact head 102 which is adaptedupon operation to contact the corresponding register plunger 84 for thepurpose of actuating or setting the register plunger 83 for engagementof lug 87 with the trip pawl 77.

Below the key levers 24 there is pivotally mounted in the side frames ofthe machine at 103 a universal bar 104, which extends transversely ofthe machine and is disposed to be contacted by the lower edges of thekey levers 24 so that the downward movement of any key lever willactuate the universal bar. The universal bar is provided with widelyspaced upwardly extending arms 105 which are integral therewith and uponwhich is mounted a release bail 106 which is disposed to make contactwith the release hook carrier head 36 and to engage for operation therelease hook 99. The upwardly extending arm 105 of the universal bar isprovided with a spring 107, the rearward end of which is attached to themachine frame. This spring serves to urge the universal bar and relatelparts into retracted position.

Disposed above the actuating cam assembly and adjacent to the platen 22is provided the type bar assembly, which is comprised of a series oftype bars 108, mounted in the conventional arcuate guide by means of abearing shaft 109. Each of the type bars 108 is operatively connected toa corresponding sub-lever 91 by means of a pull link 110, one end ofwhich is attached to the upper end of the sub-lever 91, and the otherend to the rearwardly extending arm 111 provided on the type bar 108.Attached near the upper end of the sub-lever 91 is one end of a spring112, the other end of which is attached to the frame bracket 68. Thespring 112 serves to bias the type bars and the sub-levers intoretracted position.

Each of thesub-levers 91 is provided with a laterally projecting lug 113which is adapted to be acted upon by the corresponding contact head 64carried on the upper end of the actuating lever 63 for the purpose oftransmitting driving action to the sub-lever 91. The contact head 64 isadjustable by screw means whereby adjustment can be made to open orclose the space between the head 64 and the lug 113. By closing thisspace, greater move-. ment is imparted to the sub-lever 91 by the actionof the actuating lever 63, so that the connected type bar 108 will beimpelled to printing position with increased impact of the types on theplaten. Conversely, the opening of the space between the contact head 64and the lug 113 will lessen the impact of the types on the platen. Thisarrangement is provided to effect impression control of the individualtype bars.

In the alternative embodiment disclosed in FIGURE 10, there is provideda spring tensioned lever 116 which is pivotally mounted on the framebracket 115 by means of the bearing shaft 117. The spring tensionedlever116 is adapted to make operative contact with the contact roller 62provided on the face of the actuating cam 46. Tension is provided forthe lever 116 by means of the spring 118 which is attached at one end tothe lever 116 and at the other end to a frame bracket. This springtensioned lever exerts pressure on the actuating cam 46 so as to urge itinto engagement with the power roller 69. The actuating lever 63A isconnected with the sublever 91 by means of the adjusting screw 64A, thehead of which is adapted to fit into a slot provided in the projection113A carried on the sub-lever 91. The other end of the screw 64A hasthreaded connection with the actuating lever 63A. Adjustment of thescrew member 64A is effective to increase or decrease the printingimpact of the type bar on the platen and is efiective to provideimpression control of the individual type bars.

As previously pointed out there is provided at the extreme right end ofthe series of actuating earns 46 a control cam 47 (FIGURE 2) and at theextreme left end of said series a starter cam 48 (FIGURE 3). The controlcam 47 serves the function of releasing the starter cam 48 foroperation. To effect this, the sub-lever 91 associated with the controlcam 47 (FIGURE 2) is operatively connected to the cam release pawl 72 ofthe starter cam 48 (FIGURE 3). This connection is effected by means of atransverse shaft 119 which is provided on its right end with an upwardlyextending bell crank 12%, and on its left end with a downwardlyextending bell crank 121. The bell crank 120 is connected by link 123 tothe sub-lever 91 of the control cam 47, and the bell crank 121 isconnected by link 122 to the cam release pawl 72 of the starter cam 48,so that operation of the control cam 47 is effective to release foroperation the starter cam 48. This is effected by movement of therelease pawl 72 from engagement with the latch ear 5213 provided on thestarter cam. In operation the starter cam 48 serves to operate theregister bar 82 for the purpose of releasing selected cams from primaryposition upon completion of its cycle of operation to start thesequential release of the actuating cams.

The control cam 47 (FIGURE 2) has provided thereon a latch ear 52A whichis adapted to engage the detent 73 provided on the release pawl 72. Thislatch ear is effective to provide a two-way action for the release pawl72 for the purpose of releasing the control cam 47 from primary positionupon. release of the finger keys. The upwardly. extending arm-75provided on the release pawl 72 of the control cam 47 is connected tothe universal bar bellcrank by means of connecting links 124, 125, and126. The bell crank 105 is connected to link 124 by means ofa headed pin127 and a slot 128. This mechanism is efiective to. release from primaryposition the control cam 47 upon the completion of an operating cycle ofthe universal bar.

There are certain functions of a typewriting machine suchasunderscoring, the writing of certain symbols, tabulating, letter shift,and the like which for operative purposes it is not desirable to operatein connection with a sequence control device such as herein disclosed.For these operations actuating cams are provided without the pivotedlatch members 49 and the release balls 55. On suchcarns the detent 73provided on the release pawl is adapted to contact latch cars such as52A (FIGURE 2) and 52B (FIGURE 3) arranged to release the cams either onthe downward motion of the finger key, or upon release of the finger keyas desired to perform the particular function. The upwardly extendingarm 75 of the release pawl 72 for such cams may be connected byindividual bell cranks directly to the key levers for direct operation,or they may be connected directly to the release hook 99 for operationthrough the selector mechanism, thus by-passing the delayed actionregister bar 82, or such functions may be registered for delayed actionon the register bar.

In operation, the finger keys 25 are depressed by finger movementseither singly or in combinations for the purpose of writing the letteror combination of letters desired. The downward movement of the fingerkey 25 pivots the key lever 24 on its mounting shaft 23, moving alloperative parts connected thereto into the positions disclosed inFIGURES 2 and 8. The downward movement of the key lever 24 moves thepull bar 38 against the tension of spring'40. The movement of the pullbar 38 moves the pin 42 carried on the pull bar downward in slot 43(FIGURE 8) provided on the primary selector bar 26. The action of thepin 42, moving in slot 43, forces the primary selector bar 26 to theleft a predetermined distance. Should a combination of primary'selectorbars 26 controlling the operation of an auxiliary selector bar 26A bemoved simultaneously, such movement will tend to carry the projections29 provided on the edges of the primary selector bars 26 away from thecross bar 30 carried on each of the auxiliary selector bars 26A. Thismovement allows the corresponding spring 31 to move the affectedauxiliary selector bar 26A simultaneously with the primary selector bars26. The

movement of the selector bars 26 and 26A serves to bring the notches 28provided in the rearward edges thereof into line with predeterminedrelease hook carrier arms 32, allowing the release hook carrier arms topass into the notches 28 when released by further movement of the fingerkeys as hereinafter explained. The movement of the finger keys carriesthe universal bar 104 downward into the position shown in FIGURE 2, thusmoving the release bail 106 forwardly from beneath the release hookcarrier head 36, allowing the release hook carrier arm 32 to move intothe notches 28 provided in the rearward edges of the selector bars '26and 26A. The downward movement of the release hook carrier arm 32, whichis effected by the swinging action of links 33 in response togravitational pull, carries the forward end of the release hook 99,which is operatively connected to the release hook carrier arm by meansof the headed pin 37 and the slot 100, into operative engagement withthe release bail 166, causing the hook-like notch 161 provided on theforward end of the release hook 99 to be engaged by the release bail166. The action just explained is ac complished during the first part ofthe movement of the finger keys. Further movement of the finger keys,moves the actuating bail 106 forwardly thereby swinging the release book99 forwardly on its supporting link 95, bringing the release hook head162 into engagement with the register plunger head 84, therebyprojecting the register plunger 83 forwardly in the register bar 82.This action engages the contact lug 87 carried on the register plunger83 with the head 36 of the trip pawl 77.

The movement just explained also carries the bell crank 105 forwardlyinto the position shown in FIGURE 2, which action through the medium ofconnecting links 124, 125, and 126 turns the release pawl 72 on itspivot 66, disengaging the release pawl detent 73 from the re lease latchhead 52 carried on the control cam 47, allowing the force of spring 67through the medium of the actuating lever 63 to rotate the control cam47 in a clockwise direction until the lug 52A provided on the cam isbrought into engagement with the detent 73.

Upon release of the finger keys 25, the springs 60' will return the keylevers 24, pull bars 38, and selector bars 26 and 26A to inactiveposition. This allows the spring 167 to return the universal bar andattached release bail 106 to retracted position. This also permits therelease pawl spring 72A to return the release pawl 72 to rest position,thereby releasing detent 73 (FIGURE 2) from lug 52A, allowing thespring-tensioned lever 63 to further rotate the control cam 47. If atthis point all of the actuating earns 46 are in primary position, therearward release latch head 52 of the control cam 47 will be caused topass the secondary detent 114 without engagement therewith and thecontrol cam will be rotated into engagement with the power roller 6?.Should any actuating cam 46 be in operation or tripped into secondaryposition as hereinafter explained, the latch head 52 of the control camwill engage the secondary detent 114 and retain the control cam in thisposition until all actuating cams 46 are returned to primary position,at which time it will be released and rotated into engagement with thepower roller 69. Rotation of the power roller will turn the cam 47 onehalf revolution and thereby bring the laterally projecting element 61into engagement with the actuating lever 63 (FIGURE 4). The actuatinglever 63 through the medium of the contact head 64 and the projectinglug 113 will pivot the sub-lever 91 in an anticlockwise direction. Thisaction through the transverse shaft 119 and the connecting links 123 and122 (FIG- URES 2 and 3) will operate the release pawl 72 which controlsthe action of the starter cam 43 by removing the release pawl detent 73from engagement with the lug 52B carried on the cam 68. Upon release ofthe starter cam 48, it is brought into operative engagement with thepower roller 69 and is rotated thereby. This action through the mediumof the cam element 61A, the actuating lever 63, sub-lever 91, and thrustlink 90, acting on toggle links 92 and Q3 will rock the register bar onits axis 81 into actuated position as shown in FIGURE 3. This actionwill engage the contact lug 87 carried on the register plunger 83 in adownward direction against the trip pawl contact head 80, turning thetrip pawl 77 in a clockwise direction. This action, through theconnecting link 76 will operate the cam release pawls 72, therebydisengaging the release pawl detent 73 from the release latch head 52carried on the actuating cam 46 (FIGURE 1), releasing the actuating camfrom primary position. When the cam 46 is released, the actuating lever63, moving under tension from the spring 67, will rotate the cam in aclockwise direction until the rearward release latch head 52 is broughtinto engagement with the secondary detent 114 (FIGURES l, 5, 6, and 7).Further movement of the starter cam 48 will carry the forward end of thetripped register plungers 83 against the plunger reset bar 88, whichwill force the plungers rearwardly into retracted position. As thestarter cam 48 completes a revolution, the lug 52B is brought intoengagement with the detent 73 carried on the release pawl 72, therebyarresting the movement of the starter cam 48. The register bar andconnecting parts will be returned to retracted position through theaction of the spring 112 on the sublever 91.

When all of the cams are in primary position the re lease balls 55 inthe active row (bottom row of FIGURES 5, 6, and 7: rearward row in otherfigures), are all displaced to the right (FIGURE 7). This isaccomplished by placing more tension on the spring 58 carried in theball positioning means 66A than is placed on the corresponding springcarried in the ball positioning means 6613. This is accomplished throughthe setting of the adjusting screws 59 comprising part of the respectiveball positioning means.

When the control cam 47 is released from primary position the releaseball 55 carried therein and in the active row is carried out of contactwith the corresponding release ball in the actuating cam 46. Rotation ofthe control cam 47 will release for operation the starter cam 48 ashereinbefore explained. When the starter cam 48 is released, the releaseball 55 carried therein is moved out of contact with the row of balls inactive position. This action breaks the contact between the releaseballs 55 carried in the actuating cams 46 and the corresponding ballcarried in the ball positioning means 64%.. As the control cam 47completes a half revolution and is arrested in primary position, therelease ball 55 carried therein which formerly reposed in the inactiverow is brought into the active row of balls. This action takes placewhile the starter cam is in rotation and the ball carried in the startercam 48 is out of contact with the active row of balls. This allows thehall positioning means 69B to displace the balls to the left as shown indotted lines in FIGURE 7. The rotation of the starter cam 48 effects therelease of the selected actuating cams 46 from primary position in themanner hereinbefore eX- plained. The actuating cams 46 are arrested insecondary position by reason of the rearward release latch head 52 beingbrought into contact with the secondary detent 114. The tripped cams areretained in this position until the starter cam 48 completes arevolution and is brought back to primary position, and the release ball55 carried therein is brought back into line with the row of activeballs.

The return of the starter cam 48 to primary position will bring therelease ball 55 carried therein into active position as shown in FIGURE7. The moving of this ball into active position will displace the otherrelease balls 55 carried in the actuating cams 46 in a right handdirection. When the actuating cams 46 were tripped from primary positionand moved into secondary position as hereinbefore explained, the releaseballs 55 carried in each of the cams so tripped were carried out ofcontact with like balls in the adjacent cams not released from primaryposition, and the latch ears 54 provided on the release latches 49 ofthe tripped cams were carried into contact with the release balls 55carried in the adjacent cam to the left thereof as illustrated in FIGURE7, by ball 55A, and latch ear 54A of cam 46A. As the starter cam 48 isreturned to primary position and the release balls 55 in active positionare displaced in a right hand direction as hereinbefore explained, therelease ball 55' adjacent to the release latch ear 54 will be forcedagainst said ear, thereby turning the release latch 49 on its pivot 51,thus moving the release latch head 52 to the right and out of engagementwith the secondary detent 114 as disclosed in FIGURES 6 and 7. Uponrelease from secondary position of the actuating cams 46, tensionexerted by the spring 67, through the medium of the actuating lever 63will move the enlarged segment 76 of the actuating cam into contactrelation with the power roller 69. The power roller 69 is adapted to bein constant rotation in an anti-clockwise direction. Through frictioncontact with the enlarged segment 70, the power roller will rotate theactuating cam one-half revolution to effect an operating cycle of thetype bars. The rotation of the actuating cam 46 will carry the contactelement 61 into engagement with the actuating lever 63, moving it intoactuated position as disclosed in FIGURE 4. This action brings thecontact head 64 into engagement with the lug 113 provided on thesub-lever 91, thereby tipping the sub-lever forwardly on its axis 66.This action through the medium of the pull link 110 will pivot the typebar 108 on its bearing 109 and impel it into printing contact with theplaten.

As the actuating cam 46 completes one-half revolution, the enlargedsegment 70 of the cam is carried out of engagement with the power roller69, at which point the actuating cam is arrested by the action of therelease latch head 52 being brought into engagement with the detent 73provided on the release pawl 72. The actuating lever 63 is returned torest position by means of the spring 67. The sub-lever 91 and connectedtype bar 108 are returned to rest position by means of the spring 112.As the actuating cam 46 is returned to primary position, the releaseball 55 carried therein, which was formerly in neutral position isbrought into active position, thereby displacing the release balls 55 tothe right thereof in a right hand direction. This action releases thenext actuating cam in sequence which has been tripped into secondaryposition in the same manner as the first cam was released as hereinexplained. This action is repeated until all of the actuating cams thathave been tripped into secondary position have been operated andreturned to primary position. While this action is in progress, anadditional selection of types or other functions can be made on thekeyboard and set up on the register bar. When the first selection hasbeen writtenin the manner explained and all of the actuating camsreturnedto primary position, the control cam 47 will be released fromsecondary position in the same manner as the actuating cams 46. Thecontrol cam 47 will be caused to rotate and will again release thestarter cam 48 which will actuate the register bar 32 and thereby tripselected actuating cams 46 for printing the second selection of types.This arrangement allows a deferred action operation whereby the operatorcan set up a word on the keyboard while a previous selection is beingprinted. It will be observed that the cam releasing means hereindisclosed will permit the operation in rapid succession of any number orcombination of actuating cams.

With the combination and arrangement of parts as herein disclosed, itwill be possible to use on a power driven typewriter a keyboard or" thetype commonly used on shorthand machines. Such keyboards usually haveinitial consonant letters disposed on the left side thereof and adaptedto be operated by the fingers of the left hand; final consonant lettersare usually disposed on the right side thereof, and adapted to beoperated by the fingers of the right hand; while the vowels are mediallydisposed and are adapted to be operated by the thumbs. Corresponding tothis arrangement of the keyboard, the letter types on the type bars arearranged in the same order and so disposed that any combination ofletters set up on the keyboard, upon release of the keys, will bewritten in rapid succession from left to right in the same order as theyappear on the keyboard. It will also be observed that the selectingmeans herein disclosed will permit the use of a single key or acombination of keys to control the writing of a single letter or acombination of letters as predetermined. This feature of the inventionwill permit the control of a maximum number of type bars with a minimumnumber of finger keys. For instance the four finger keys disclosed inFEGURE 8 can be adapted to control the writing of as many as fifteenletters and letter combinations. With this arrangement it will bepossible to register on the keyboard combinations of letters comprisingentire words or syllables at one operation. Selections thus made will beset up on the register bar and upon release of the finger keys will betransferred to the actuating cams, which will write the selected lettersin rapid succession. While this action is being performed, anotherselection of letters to be written may be set up on the register bar.Upon completion of the writing of the first selection, the nextselection will be automatically transferred to the actuating cams forprinting. Thus it will be possible on a type writing machine embodyingthis invention to write at a speed far in excess of that possible onpresently manufactured page printing typewriters.

Having now described and illustrated an embodiment of my inventiondisclosing a particular construction, combination, and arrangement ofparts, I wish it to be understood that my invention is not to be limitedto the specific form or arrangement of parts herein described and shown,or specifically covered by my claims.

What is claimed is:

1. In a typewriting machine, a platen, printing elements having typesarranged thereon mounted in operative relation to the platen, a powerdriven roller, rotatable cams responsive to the power driven roller andmeans operatively connecting the cams to the printing elements, pivotedlatch members mounted on said cams, primary detents engageable by thelatch members and operable to retain the cams in primary position,mechanism responsive to selective control including a series ofpermutably shiftable bars and means selectable thereby for selectingtypes to be printed, a register bar, a series of projectible lugsmounted on the register bar for registering selected types, meansengageable by the lugs adapted upon operation of the register bar torelease selected cams from primary position, secondary detentsengageable by the latch members and effective to arrest and retain theselected cams in secondary position, and means provided in the cams forconsecutively disengaging the latch members from said secondary detents,thereby releasing in predetermined sequence the selected cams fromsecondary position for operative engagement with the power driven rollerfor printing selected types.

2. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a continuously rotating power roller,cams adapted to frictionally engage the power roller for rotationthereby, pivoted latch members mounted on the cams, pawls adapted toengage the cams, normally holding the cams against movement intosecondary position, a register bar, projectible lugs mounted on theregister bar normally held in retracted position, selectable means forprojecting the lugs into operative position, said projected lugseffective upon operation of the register bar to actuate the pawls, meanssubject to delayed action control for operating the register bar,thereby releasing selected cams for movement into secondary position,detents mounted adjacent to the cams and engageable by the pivoted latchmembers for holding the cams in secondary position, sequence controlmeans embodying latch operating members provided in the cams disposed toform a series of contacting elements through the cams in primaryposition, and effective to operatively contact the latch members of camsin secondary position for sequentially releasing selected cams forrotation, and means for transmitting movement of the cams to the typeelements.

3. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a power driven member, actuatorsadapted to operatively engage the power driven member, permutablyshiftable selector bars responsive to selective control for selectingtypes to be printed, means for registering selected types embodying aseries of projectible lugs, detenting means normally holding theactuators out of engagement with the power driven member, meansengageable by the lugs and operable to release the detenting means forinitially releasing selected actuators, secondary detents operable toretain selected actuators in secondary position, means for releasing inpredetermined sequence the selected actuators from secondary positionfor operative engagement with the power driven member, and means fortransmitting movement of the actuators to the printing elements,printing selected types.

4. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a power driven member, actuating meansfor each type element engageable by the power driven member to impartdriving action to the type elements, means for selecting types to beprinted, a register bar, a series of projectible lugs mounted on theregister bar for registering selected types, sequentially controlledmeans for operating the register bar, and means engageable by the lugsupon operation of the register bar to release the actuating means forprinting selected types.

5. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a power driven member, actuating meansfor each type element engageable by the power driven member and adaptedto impart driving action to the type elements, means for selecting typesto be printed, means for registering selected types and operable toimpart type selections to the actuating means, means controlled by theactuating means for rendering said registering means operable to imparttype selections to the actuating means, and means for sequentiallyreleasing the actuating means for printing selected types.

6. In a typewriting machine, a platen, printing elements having aplurality of types arranged thereon mounted in operative relation to theplaten, permutably shiftable selector bars responsive to selectivecontrol for simultaneously selecting a plurality of types to be printed,means for sequentially imparting operative action to the selectedprinting elements including a power driven roller, actuable camsengageable by the power driven roller, means operatively connecting thecams to the printing elements, primary detents for retaining the cams inprimary position, selectable means for releasing the primary detents,thereby releasing the cams for movement into secondary position, latchmembers mounted on the cams and detents engageable therewith forretaining the cams in secondary position, said latch members operable torelease the cams for engagement with the power roller, means forreleasing the latch members including movable members mounted in thecams to rotate therewith and disposed to form a series of contacting elments through the cams in primary position and to operatively engage thelatch members of the cams in secondary position, and means whereby therotation of the cam imparts operative motion to said movable members forreleasing the latch members, thereby sequentially releasing the cams 14for engagement with the power driven roller for printing selected types.

7. In a typewriting machine having a platen and type elements, powermeans for actuating the type elements in cluding a power roller, aseries of earns rotatably mounted in operative relation to the powerroller, pivoted latch members mounted on the cams, pawls engageable bythe latch members efiective to retain the cams in primary position,tension means constantly tending to move the cams into secondaryposition and responsive to rotary movement of the cams to impart drivingmotion to the type elements, means connecting said tension means to thetype elements, permutably shiftable selector bars responsive toselective control and means selectable thereby for releasing the pawlsfrom engagement with the latch members, thereby releasing selected camsfor movement into secondary position, detents engageable by the latchmembers effective to retain selected cams in secondary position, saidlatch members responsive to lateral movement for releasing the cams forrotary movement, and means for imparting lateral movement to the latchmembers of selected cams including a series of elements concentricallyrecessed in the cams to rotate therewith and disposed to form contactone with the other through the series of cams while in primary positionand to operatively contact the latch members of the cams in secondaryposition.

8. In a typewriting machine having a platen and type elements, powermeans for operating the type elements including a power roller, camsrotatably mounted in operative relation to the power roller, pawlseffective to retain the cams in primary position, tension meansconstantly tending to move the cams into secondary position, permutablyselectable means and means responsive thereto for releasing the pawls,thereby releasing selected cams for movement into secondary position,detents and latch members cngageable thereby eiiective to retain theselected cams in secondary position and operable to release the camsfrom secondary position, means for imparting operative movement to thelatch members, for releasing the cams from secondary position foroperative engagement with the power roller, and means connected with thetype elements responsive to movement of the cams for moving the typeelements into printing relation with the platen.

9. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a power driven roller, actuating camsengageable by the power roller, tension means eflective to move the camsinto operative engagement with the power roller, detents operable toretain the cams in primary position, mechanism responsive to selectivecontrol for releasing the cams from primary position, secondary detentsfor arresting the cams in secondary position, means for releasing thecams from secondary position for operative engagement with the powerroller, and means connected with the type elements responsive tomovement of the cams for moving the type elements into printing relationwith the platen.

10. In a typewriting machine, a platen, a plurality of printingelements, a power driven roller, a horizontal shaft mounted adjacent tothe power roller, a series of cams rotatably mounted on the shaft to beoperatively connected with the power roller, a spring-tensioned leverfor each cam effective to rotate the cam into operative contact with thepower roller, a detent for each cam, effective to retain the cam inprimary position, means responsive to selective control for releasingthe cams from primary position, means for arresting the cams insecondary position, means for releasing the cams from secondary positionfor operative contact with the power roller, means concentricallymounted upon the cams to rotate therewith and drive respectivespring-tensioned levers engageable therewith, and means operativelyconnecting the spring-tensioned levers to the printing elements.

11. In a typewriting machine having a platen and type elements, acontinuously rotating power roller, a series of rotatable cams to beoperatively engaged by the power roller, spring-tensioned leversconstantly tending to rotate the cams into engagement with the powerroller, latch members mounted in the cams, primary detents engageable bythe latch members and operable to retain the cams in primary position,key mechanism for selecting and releasing a plurality of said cams fromprimary position, secondary detents engageable by the latch members andeffective to arrest and retain the selected cams in secondary position,means provided in the cams for consecutively disengaging the latchmembers from said secondary detents, thereby releasing in predeterminedsequence the selected cams from secondary position for operativeengagement with the power roller, members concentrically mounted uponthe cams to rotate therewith and drive respective spring-tensionedlevers engageable therewith, and means connecting the spring-tensionedlevers to the type elements.

12. In a typewriting machine having a platen and printing elements, acontinuously rotating power roller, 2. series of rotatable cams to beoperatively engaged by the power roller, sub-levers connected to theprinting elements and responsive to rotary movement of the cams, meansconstantly tending to rotate the cams into engagement with the powerroller, latch members mounted on the cams, primary detents engageable bythe latch members and operable to retain the cams in primary position,key mechanism for selecting and releasing a plurality of said cams fromprimary position, secondary detents engageable by the latch members andeffective to arrest and retain the selected cams in secondary position,means provided in the cams for consecutively disengaging the latchmembers from said secondary detents, thereby releasing in predeterminedsequence the selected cams from secondary position for operativeengagement with the power roller, and means concentrically mounted uponthe cams to drive respective sub-levers engageable therewith.

13. In a typewriting machine, a platen, a plurality of printingelements, a power driven roller, a series of cams rotatably mounted inoperative relation to the power roller, sub-levers responsive to rotaryaction of the cams, means constantly tending to rotate the cams intoengagement with the power roller, a primary detent for each cam operableto retain the cams in primary position, mechanism responsive toselective control comprising a series of permutably shiftable bars andmeans selectable thereby for releasing the cams from primary position, asecondary detent for each cam, operable to retain the cams in secondaryposition, means for releasing the cams from secondary position foroperative contact with the power roller, operative means provided on thecams effective to drive said sub-levers, and means connecting thesub-levers to the printing elements.

14. In a typewriting machine, a platen, a plurality of type elements, acontinuously rotating power roller, a series of rotatable cams to beoperatively engaged by the power roller, actuating membersconcentrically mounted upon the cams to rotate therewith,spring-tensioned levers adapted to coact with said actuating members tomove the cams into engagement with the power roller and upon rotation ofthe cams responsive to impart driving action of the cams to respectivetype elements connected therewith, means operatively connecting thespring-tensioned levers with the type elements, primary detents operableto retain the cams in primary position, key controlled mechanism forselectively releasing a plurality of said cams from primary position,secondary detents operable to arrest and retain the selected cams insecondary position, and means for releasing in predetermined sequencethe selected cams from secondary position for operative engagement withthe power roller.

15. In a typewriting machine, a platen, printing elements having typesarranged thereon mounted in operative relation to the platen, permutablyshiftable selector bars responsive to selective control forsimultaneously selecting a plurality of types to be printed, means forsequentially printing the selected types including a continuouslyrotating power roller, cams adapted to frictionally engage the powerroller, detenting means for retaining the cams in primary position,means selectable by the selector bars for releasing predetermined camsfor movement into secondary position, means for retaining the cams insecondary position, means concentrically recessed in the cams to rotatetherewith and adapted to sequentially release the cams for rotarymovement, and means for transmitting movement of the cams to theprinting elements, printing the selected types.

16. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a continuously rotating power roller,cams adapted to operatively engage the power roller for rotationthereby, means for transmitting movement of the cams to the typeelements, pawls adapted to engage the cams normally holding the camsagainstflmovement into secondary position, pivoted latch members mountedon the cams, detents mounted adjacent to the cams and engageable by thepivoted latch members for holding the cams in secondary position, andlatch operating members provided in the cams disposed to form a seriesof contacting elements through the cams in primary position, andeffective to operatively contact the latch members of cams in secondaryposition for sequentially releasing selected cams for rotation.

17. In a typewriting machine having a platen and key levers, typeelements mounted adjacent to the platen, a continuously rotating powerroller, cams adapted to frictionally engage the power roller forrotation thereby, means for transmitting movement of the cams to thetype elements, detents mounted on the cams, pawls engageable by thedetents for normally holding the cams against movement, and means forreleasing the pawls from the detents embodying primary selector bars,means connecting the primary selector bars to the key levers eflFectiveupon partial dip of the key levers to impart operative movement to theprimary selector bars, auxiliary selector bars normally held againstmovement by the primary selector bars and released by movement of theprimary selector bars, release hooks having operative connection withthe pawls, selectable means engaging the release hooks and responsive tomovement of the selector bars for selecting the release hooks, and anactuating bail responsive to the key levers adapted to engage theselected release hooks and effective upon full dip of the key levers torelease the pawls, thereby initially releasing the cams for operativeengagement with the power roller.

18. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, key levers for controlling operationof the type elements, a continuously rotating power roller, cams adaptedto engage the power roller for rotation thereby, spring-tensioned leversconstantly tending to move the cams into operative engagement with thepower roller and responsive to rotary movement of the cams, meansconnecting the springtensioned levers to the type elements to impartoperative movement thereto, cam detenting means normally holding thecams against movement and operable to release the cams, permutablyshiftable selector bars responsive to movement of the key levers, arelease bail and means selectable by the selector bars and engageable bythe release bail for releasing the cam detenting means and therebyreleasing the cams for rotary movement.

19. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a continuously rotating power roller,cams adapted to operatively engage the power roller, means constantlytending to move the cams into operative engagement with the powerroller, means connected to the type elements and responsive to rotarymovement of the cams to impart operative 17 movement to the typeelements, cam detenting means normally holding the cams against movementand operable to release the cams, permutably shiftable selector barsresponsive to selective control, a release bail and means selectable bythe selector bars and engageable by the release bail for releasing thecam detenting means and thereby releasing the cams for rotary movement.

20. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a power roller, cams engageable by thepower roller, and means operatively connecting the cams to the typeelements, cam detenting means normally holding the cams out ofengagement with the power roller, selective means for initiallyreleasing said detenting means, secondary detents and sequence controlmeans for sequentially releasing the secondary detents, therebyreleasing the cams for engagement with the power roller.

21. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a power driven roller, actuating camsengageable by the power roller, tension means for moving the cams intooperative engagement with the power roller, detents operable to retainthe cams in primary position, mechanism responsive to selective controlfor releasing the cams from primary position, secondary detents forarresting the cams in secondary position, other means for releasing thecams from secondary position for operative engagement with the powerroller, and means connected with the type elements diiferentiallysettable to govern correspondingly the force of impact of the typeelements on the platen and responsive to movement of the cams for movingthe type elements into printing relation with the platen.

22. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a power driven member, actuating meansfor each type element engageable by the power driven member, means forselecting types to be printed, means for registering selected types andoperable to release the actuating means for engagement with the powerdriven member, and delayed action means controlled by the actuatingmeans for rendering the registering means operable to release theactuating means for printing selected types.

23. In a typewriting machine, a platen, type elements mounted inoperative relation to the platen, a power driven member, actuating meansfor each type element engageable by the power driven member, permutablyselectable means and mechanism responsive thereto for selecting types tobe printed, means for registering selected types and operable to releasethe actuating means for engagement with the power driven member, anddelayed action means controlled by the actuating means for operatingsaid registering means to release the actuating means for printingselected types.

24. In a typewriting machine having a platen and printing elements, apower driven member, actuators for the printing elements engageable bythe power driven member, primary detents for retaining the actuators inprimary position, means for releasing the primary detents, secondarydetents for arresting the actuators in secondary position, and othermeans for releasing the actuators from secondary position for engagementwith the power driven member.

25. A typewriting machine having printing elements and other functionaldevices, a power driven member, sequentially controlled actuators forthe printing elements and other functional devices mounted in operativerelation to the power driven member, a register, means to set saidregister to record thereon printing and other functional designations,and means responsive to said sequentially controlled actuators toactuate the register to thereby condition the actuators for sequentialengagement with the power driven member for actuating the printingelements and other functional devices for performing the registereddesignations.

26. In a typewriting machine, a platen, printing elements mountedadjacent the platen, a constantly rotating power roller, cams engageableby the power roller for rotation thereby, means for transmittingmovement of the cams to the printing elements, pawls normally holdingthe cams against movement and operable to release the cams forengagement with-the power roller, key levers, a release bail, releasehook carrier arms, release hooks operated by the release hook carrierarms and engageable by the release bail and connecting means foroperating the pawls, selector bars adapted to normally prevent movementof the release hook carrier arms, and means operated by the movement ofthe key levers for moving the selector bars to release the selectedrelease hook car rier arms for operation.

27. In a typewriting machine having a platen and printing elements, apower driven member, actuators for the printing elements engageable bythe power driven member, primary detents effective to retain theactuators in primary position, means for releasing the actuators fromthe primary detents, latch members for the actuators, secondary detentsengageable by the latch members for arresting the actuators in secondaryposition, and latch operating members responsive to movement of theactuators for sequentially releasing the actuators from secondaryposition for operative engagement with the power driven member.

28. In a typewriting machine, a platen, a series of printing elements, acontinuously rotating power roller, a series of cams rotatably mountedin operative relation to the power roller, operative means connectingthe cams to the printing elements including spring-tensioned leverstending to move the cams into operative engagement with the power rollerand engageable by the cams to drive respective printing elementsconnected therewith, latch members provided on the cams, primary detentsengageable by the latch members and operable to retain the cams inprimary position, selective means for releasing the primary detentsthereby initially releasing the cams, detents engageable by the latchmembers for arresting and retaining the cams in secondary position, saidlatch members operable to release said cams for rotation, and latchoperating members provided on the cams disposed to engage the latchmembers of the cams in secondary position, and responsive to rotaryaction of the cams to release the latch members of said cams, releasingsaid cams for operative engagement with the power roller.

29. A typewriting machine having a platen and type elements, a powerdriven member, actuators for the type elements enageable by the powerdriven member, means for selecting a plurality of types to be printed,delayed action means for imparting type selections to the actuators,sequentially controlled means for activating said delayed action meansto impart type selections to the actuators, and means for releasing theactuators for printing the selected types.

30. In a typewriting machine having a platen, a plurality of type barsmounted adjacent to the platen, and each type bar having a correspondingmeans for activating it; the improvement comprising: means forsimultaneously selecting a plurality of type bars, means forsimultaneously registering said selection, means for simultaneouslytransferring said selection to said activating means, and means forreleasing said selected register means, said means for transferringbeing responsive to said activating means.

31. The method of typewriting comprising: selecting a plurality ofletters to be printed, simultaneously first storing said selection,simultaneously transfering said selection, again storing said selection,and sequentially printing the selected letters from said second storage,said transfer being delayed until the printing of previous selectedletters is complete.

32. The method of typewriting comprising the steps of: first, selectinga plurality of letters; second, simultaneously displacing a member foreach letter selected; third,

19 selecting an activator for each displaced member; and fourth,sequentially printing a letter for each selected activator; the thirdstep being delayed until the 'fourth step in a previous cycle iscomplete.

33. A typewriting machine comprising a platen, a piu rality of type barsmounted adjacent to said platen, a power driven member, a series of camsincluding a control cam engageable with the power driven member, one ofsaid type bars being connected to each of said cams except said controlcam, a register member for each cam which is connected to a type bar,means for displacing each register member, said means for displacingalso releasing said control cam, first means for releasing said camsconnected to type bars responsive to both the operation of said controlcam and said register member, second means for releasing the cams in apredetermined order, so that when any register member is displaced thisalso starts the control cam which causes a type bar cam to be firstreleased by the register member and then finally released inpredetermined order.

References Cited in the file of this patent UNITED STATES PATENTS1,077,005 Smathers Oct. 28, 1913 1,614,473 Hokanson Jan. 18, 19271,753,495 Bardwell Apr. 8, 1930 1,913,831 Clark June 13, 1933 1,932,914Shelton et al Oct. 31, 1933 2,217,179 Mills Oct. 8, 1940 2,714,948Schrem et al Aug. 9, 1955 FOREIGN PATENTS 355,530 qtaly Jan. 10, 1938

